— I called you yesterday evening, but no one answered.
— I ______in my bedroom at that time.
| A．read | B．was reading | C．am reading | D．reads |
The number of the students in our school always growing.
| A．be | B．are | C．is | D．were |
Leaves fall _______piles ________the ground
| A．into; upon | B．upon; into | C．onto; off | D．into; onto |
They think wolves are dangerous _________humans so this leads _______the danger of wolves.
| A．for; to | B．as; for | C．to; to | D．at; in |
Wolves often work __________a team and they never kill for __________.
| A．as; funny | B．for; fun | C．as; fun | D．for; funny |
We should tell hunters _______tigers.
| A．don’t kill | B．not kill | C．killing | D．not to kill |